There is a project with the City of Ottawa to look at using local improvement charges to finance energy efficiency improvements or, potentially, generation sources.
I believe there was a pilot in Whitehorse. In fact I'm not sure if it's operating currently, but they did do some work and proved that people would look at adding the financing onto their homes, putting a lien against their home that could be transferred to the next owner, because then it wouldn't affect their particular credit rating or credit position but would be tied to the building as a building improvement.